618873 has 4 divisors (see below), whose sum is σ = 825168. Its totient is φ = 412580.

The previous prime is 618869. The next prime is 618883. The reversal of 618873 is 378816.

618873 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 618873 - 2² = 618869 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (618823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103143 + ... + 103148.

It is an arithmetic number, because the mean of its divisors is an integer number (206292).

2⁶¹⁸⁸⁷³ is an apocalyptic number.

It is an amenable number.

618873 is a deficient number, since it is larger than the sum of its proper divisors (206295).

618873 is a wasteful number, since it uses less digits than its factorization.

618873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206294.

The product of its digits is 8064, while the sum is 33.

The square root of 618873 is about 786.6848161748. The cubic root of 618873 is about 85.2184920958.

The spelling of 618873 in words is "six hundred eighteen thousand, eight hundred seventy-three".